Datasheet ATA663431, ATA663454 (Microchip)

ATA663431/54 LIN SBC including LIN Transceiver, Voltage Regulator, Window Watchdog and High-Side Switch Features General Description
• Supply Voltage up to 40V The ATA663431/54 is a new generation of system • Operating Voltage V basis chip (SBC) with a fully integrated LIN transceiver, VS = 5V to 28V • Supply Current designed in compliance with LIN specifications 2.0, 2.1, 2.2, 2.2A, ISO 17987-7 and SAEJ2602-2, with a - Sleep mode: typical y 10 µA low-drop voltage regulator (3.3V/5V/85 mA), a window - Silent mode: typically 47 µA watchdog and a high-side switch. This combination - Very low current consumption at low supply makes it possible to develop simple, but powerful, voltages (2V < VVS < 5.5V): typically 150 µA slave nodes in LIN-bus systems. ATA663431/54 is • Linear Low-Drop Voltage Regulator, designed to handle low-speed data communication in 85 mA Current Capability: vehicles (such as in convenience electronics). - MLC (multilayer ceramic) capacitor with 0 Improved slope control at the LIN driver ensures ESR secure data communication up to 20 Kbaud. The bus - Normal, Fail-Safe, and Silent mode output is designed to withstand high voltage. Sleep mode and Silent mode guarantee minimized current ATA663454: VVCC = 5.0V, ±2% consumption even in the case of a floating or ATA663431: V short-circuited LIN bus. VCC = 3.3V, ±2% - Sleep mode: VCC is switched off
Package Types
• VCC Undervoltage Detection with Open Drain Reset Output (NRES, 4 ms reset time)
ATA663431/ATA663454
• Voltage Regulator is Short Circuit and
3 x 5.5 mm VDFN16*
Overtemperature Protected • Adjustable Watchdog Time via External Resistor • Negative Trigger Input for Watchdog RXD 1 16 VCC • Limp Home Watchdog Failure Output • LIN Physical Layer according to LIN 2.0, 2.1, 2.2, EN 2 15 VS 2.2A, ISO 17987-7 and SAEJ2602-2 NRES 3 14 LIN • Bus Pin is Overtemperature and Short Circuit Protected versus GND and Battery TXD 4 EP 13 GND • High-Side Switch • Wake-Up Capability via LIN Bus (100 µs NTRIG 5 12 WKin dominant), WKin pin and CL15 pin MODE 6 11 CL15 • Wake-up Source Recognition • TXD Time-out Timer WDOSC 7 10 LH • Advanced EMC and ESD Performance HSin 8 9 HSout • Fulfills the OEM “Hardware Requirements for LIN in Automotive Applications Rev.1.3” • Interference and Damage Protection According to * Includes Exposed Thermal Pad (EP). ISO7637 • Qualified According to AEC-Q100 • Package: 16-lead 3 x 5.5 mm VDFN with Wettable Flanks (Moisture Sensitivity Level 1)  2018 Microchip Technology Inc. DS50002820B-page 1 Document Outline Features General Description Package Types Block Diagram 1.0 Functional Description 1.1 Physical Layer Compatibility 1.2 Operating Modes FIGURE 1-1: Operating Modes TABLE 1-1: Operating Modes (Mode Pin Is Always Low) 1.2.1 Normal Mode 1.2.2 Silent Mode FIGURE 1-2: Switching to Silent mode 1.2.3 Sleep Mode FIGURE 1-3: Switching to Sleep Mode 1.2.4 Fail-Safe mode TABLE 1-2: Signaling in Fail-safe Mode 1.3 Wake-up Scenarios from Silent Mode or Sleep Mode 1.3.1 Remote Wake-up via LIN Bus 1.3.1.1 Remote Wake-up from Silent Mode FIGURE 1-4: LIN Wake-up from Silent Mode 1.3.1.2 Remote Wake-up from Sleep Mode FIGURE 1-5: LIN Wake-up from Sleep Mode 1.3.2 Local Wake-up via WKin Pin FIGURE 1-6: Local Wake-up via WKin pin from Sleep Mode FIGURE 1-7: Local Wake-up via WKin pin from Silent Mode 1.3.3 Local Wake-up via CL15 1.3.4 Wake-up Source Recognition TABLE 1-3: Signaling in Fail-Safe Mode 1.4 Behavior under Low Supply Voltage Conditions FIGURE 1-8: VCC and NRES versus VS (Ramp-up) for ATA663431 FIGURE 1-9: VCC and NRES versus VS (Ramp-down) for ATA663431 FIGURE 1-10: VCC and NRES versus VS (Ramp-up) for ATA663454 FIGURE 1-11: VCC and NRES versus VS (Ramp-Down) for ATA663454 1.5 Voltage Regulator FIGURE 1-12: VCC Voltage Regulator: Supply Voltage Ramp-up and Ramp-down FIGURE 1-13: Power Dissipation: Safe Operating Area: Regulator’s Output Current IVCC versus Supply Voltage VVS at Different Ambient Temperatures (RthvJA = 45 K/W assumed) 1.6 Watchdog FIGURE 1-14: Limp Home (LH) State Diagram 1.6.1 Typical Timing Sequence with RWDOSC = 51 kΩ EQUATION 1-1: FIGURE 1-15: Timing Sequence with RWDOSC = 51 kΩ 1.6.2 Worst-Case Calculation with RWDOSC = 51 kΩ EQUATION 1-2: TABLE 1-4: Typical Watchdog Timings 1.7 Pin Descriptions TABLE 1-5: Pin Description 1.7.1 Bus Data Output Pin (RXD) 1.7.2 Enable Input Pin (EN) 1.7.3 Undervoltage Reset Output Pin (NRES) 1.7.4 Bus Data Input/Output (TXD) 1.7.5 NTRIG Input Pin 1.7.6 Mode Input Pin (MODE) 1.7.7 WDOSC Output Pin 1.7.8 High-side Switch Pins (HSout, HSin) 1.7.9 Limp Home Watchdog Failure Output (LH) 1.7.10 CL15 Pin 1.7.11 Wake Input Pin (WKin) 1.7.12 Ground Pin (GND) 1.7.13 Bus Pin (LIN) 1.7.14 Supply Pin (VS) 1.7.15 Voltage Regulator Output Pin (VCC) Typical Application Circuit 2.0 Electrical Characteristics 2.1 Absolute Maximum Ratings† Electrical Characteristics FIGURE 2-1: Definition of Bus timing Characteristics Temperature Specifications 3.0 Packaging Information 3.1 Package Marking Information LIN SBC including LIN Transceiver, Voltage Regulator, Window Watchdog and High-Side Switch Appendix A: Revision History Revision A (November 2018) Revision B (November 2018) Product Identification System AMERICAS Corporate Office Atlanta Austin, TX Boston Chicago Dallas Detroit Houston, TX Indianapolis Los Angeles Raleigh, NC New York, NY San Jose, CA Canada - Toronto ASIA/PACIFIC Australia - Sydney China - Beijing China - Chengdu China - Chongqing China - Dongguan China - Guangzhou China - Hangzhou China - Hong Kong SAR China - Nanjing China - Qingdao China - Shanghai China - Shenyang China - Shenzhen China - Suzhou China - Wuhan China - Xian China - Xiamen China - Zhuhai ASIA/PACIFIC India - Bangalore India - New Delhi India - Pune Japan - Osaka Japan - Tokyo Korea - Daegu Korea - Seoul Malaysia - Kuala Lumpur Malaysia - Penang Philippines - Manila Singapore Taiwan - Hsin Chu Taiwan - Kaohsiung Taiwan - Taipei Thailand - Bangkok Vietnam - Ho Chi Minh EUROPE Austria - Wels Denmark - Copenhagen Finland - Espoo France - Paris Germany - Garching Germany - Haan Germany - Heilbronn Germany - Karlsruhe Germany - Munich Germany - Rosenheim Israel - Ra’anana Italy - Milan Italy - Padova Netherlands - Drunen Norway - Trondheim Poland - Warsaw Romania - Bucharest Spain - Madrid Sweden - Gothenberg Sweden - Stockholm UK - Wokingham Worldwide Sales and Service